Linux would not be in such a strong position, IMO, if they were not GPL. So many companies have been forced to reluctantly release things like drivers for their hardware because they wanted to leverage the power of linux in their products. BSDs will never get contributions like that.
For video decoders though, contributions are less important and so I think BSD is a good idea. We desperately need AV1 to succeed, and that means everyone and their dog using it.